I've been working on an Org tool to browse Emacs buffers. Emacs has the
function list-buffers (C-x C-b), where you can view a list of buffers,
delete buffers, etc. This is intended to be a replacement for
list-buffers, implemented in Org-mode.

The code is attached, and there's a git repo at
http://github.com/dandavison/org-buffers

After putting the code in your load-path and doing 
(require 'org-buffers), use the function `org-buffers-list' to create
the listing buffer. This is a read-only Org-mode buffer populated with
links to open buffers. Information is stored for each buffer using
properties. By default, the buffers are grouped by major mode. Here's a
screenshot.

http://www.princeton.edu/~ddavison/org-buffers/by-major-mode.png

The buffer has some special key-bindings: